Angry Birds does seem like the obvious choice. Though PvZ is an excellent example of a game that is actually improved by being on a touchscreen device.
Off topic, but I really wish angry birds had a "mirror mode" where you launch the birds from the right instead if the left. Seems like it would be pretty easy to do, but maybe I'm the only person that wants the ability to do that.
Off topic, but I really wish angry birds had a "mirror mode" where you launch the birds from the right instead if the left. Seems like it would be pretty easy to do, but maybe I'm the only person that wants the ability to do that.